IBRAHIM, R. W. Existence of deviating fractional differential equation. CUBO, A Mathematical Journal, [S. l.], v. 14, n. 3, p. 129–142, 2012. DOI: 10.4067/S0719-06462012000300009. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1336. Acesso em: 11 may. 2024.